UMIR University of Mindanao
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Rubber seed (hevea brasiliensis) particle board development
No full textIn Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Civil EngineeringThe efficient way to meet the increasing need for wood-based materials worldwide, using alternative raw resources such as agricultural biomass and recycled wood waste and byproducts in the manufacturing of particle board is a vital circular economy idea. In the process of making particle board, wood chips are the second most expensive component after resin, with both components accounting for more than 50% of the total cost of manufacturing. Therefore, switching from wood chips to lignocellulosic agricultural wastes might result in a large cost savings. The performance of particle board made from rubber seed (Hevea brasiliensis) and polyester resin as a binding agent was evaluated in this study. The board's physical (density, water
absorption, and thickness swelling) and mechanical (tensile strength, compressive strength, and modulus of elasticity) properties were evaluated using the American Society for Testing and Materials (ASTM) guidelines. The board's physical characteristics showed that it had much higher density and water absorption than the
conventional medium-density board, with an ideal value of 1050.458 kg/m3 and 0.427%, respectively. The findings of the thickness swelling test, however, reveal no discernible change. The board's Tensile Strength has an optimal value of 2.377 MPa in terms of mechanical attributes. The Modulus of Elasticity (MOE), however, does not adhere to any particle board norms. In conclusion, the study shows that the rubber seed has a significant impact on the particle board's physical quality and mechanical properties, it was also suitable for manufacturing the particle board
Working capital management and profitability among lending institutions in Panabo City
No full textThis study aimed to determine the significant relationship between working capital management and profitability among lending institutions in Panabo City. The respondents of this research were 15 lending institutions consisting of 45 employees. The researchers used a random sampling technique to gather the data. The study adopted a quantitative non-experimental and correlational method. Mean and Pearson-r were used to analyze the effectiveness of working capital management and profitability among lending Institutions in Panabo City. The study revealed that the lending institutions in Panabo City in terms of working capital management garnered a high result in terms of cash management, debtor management, creditor management, and stock management constituting a 4.55 overall mean. The level of profitability among lending institutions in Panabo City, is high and yielded an overall mean of 4.46. Furthermore, it reveals that there is a significant relationship between working capital management and profitability. The results showed a p-value of 0.000, which is less than 0.05 level of significance, indicating that the null hypothesis is rejected
Efficiency of double helix rectangular continuous transverse reinforcement (RCTR) for RC column
No full textIn Partial Fulfillment of the Requirements for the Degree of Bachelor of Science in Civil EngineeringThe continuity of transverse reinforcement for RC columns ensures ductile behavior and provides confinement and shear resistance. A previous study showed that rectangular continuous transverse reinforcement (RTCR) had increased the average strength of columns. However, the study concluded that the configuration of RTCR exhibited a high tendency of catastrophic unsymmetrical failure and premature buckling. This study proposed a double helix rectangular continuous transverse reinforcement (DHRTCR) and cyclic triangular transverse reinforcement (CTTR) configuration to be embodied in the design. Specifically, examine the increase in compressive strength, resistance to buckling failure, and steel consumption. The compressive strength is calculated theoretically and investigated using Universal Testing Machine (UTM) per ASTM C39. The buckling and steel consumption was determined using a digital vernier calliper and calculation of gross volumetric ratio,
respectively. The result of the study showed that DHRTCR exhibited a 5.22% increase in compressive strength with a 1.080% average volumetric ratio. The CTTR decreased by 4.09% in compressive strength with an average 1.153% average volumetric ratio. In the mid-height intersecting point of the double loop of DHRTCR, the critical region occurs. The CTTR was critical at a distance creating two ties symmetrically placed at each other. The confinement and compressibility had significantly been affected by reinforcement spacing (lesser spacing leads to minimal buckling of longitudinal bars). Lastly, in larger-scale applications, such as slender columns, DHRTCR will consume lesser steel reinforcement due to the absence of hooks
Waste wood ash and fly ash as partial cement replacement in producing concrete hollow blocks
No full textIn Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Civil EngineeringWood charcoal from roasted chicken branches produces wood ash that most people consider as waste. This paper used wood ash and fly ash to partially replace cement in producing concrete hollow block. It aims to investigate the effects of partial replacement of cement on the density, water absorption, compressive, and fire resistance in the concrete hollow blocks. The weight percentage of replaced cement is 45%. Ratio 2, which has 15% wood ash, and 30% fly ash is required to be used for partial cement replacement. The CHB with partial cement replacement demonstrated a lighter weight but higher water absorption. Also, its fire resistance shows that all ratio samples have higher weight loss percentage than the control sample. Finally, the compressive strength of the CHB with partial cement replacement (ratio 2) showed a small difference compared to the control sample made
Marketing strategies and sustainable competitive advantage among local coffee shops in Davao City
No full textIn Partial Fulfillment of the Requirements
for the Degree of Bachelor of Science in Business Administration
Major in Marketing ManagementThe coffee shop industry operates in a cutthroat climate with a constant influx of new competitors from many sectors of the economy and the country. The study aims to determine the sustainable competitive advantage through marketing strategy among local coffee shops in Davao City. The study used a descriptive correlation design and adapted questionnaires for the local coffee shop customers in Davao City as the study's respondents and was identified using a random sampling technique. The results were treated statistically using mean, standard deviation, and Spearman's rho coefficient. Furthermore, the study revealed a high level of marketing strategy among local coffee shops in Davao City. Additionally, the level of sustainable competitive advantage among local coffee shops in Davao City is very high. The correlation analysis result revealed a moderately positive relationship between marketing strategy and the sustainable competitive advantage of local coffee shops in Davao City. It indicates that local coffee shops in Davao City often manifest marketing strategies that give customers a great experience and satisfaction, resulting in a highly sustainable competitive advantage. Coffee shop owners must maintain their marketing strategies always to manifest sustainable competitive advantage
STUDENTS PERCEPTION ON DISASTER RISK MANAGEMENT: A BASIS FOR PROGRAM ENHANCEMENT
No full textUndergraduate thesesThis study investigates the students’ disaster risk management at the
University of Mindanao, and this would provide the needs of students to be
informed and aware of the potential risk of a disaster or emergency, along
with the employees of the institution, and to provide specific guidelines,
strategies, and plans on how to respond in times of emergencies. Data was
collected through a survey questionnaire and analyzed using statistical
methods. The study used a quantitative, non-experimental, descriptive
research approach to look at the level of the student’s disaster risk
management. The results revealed very high overall disaster risk
management level among students. The overall computed mean and
standard deviation of disaster risk management showed a very high
descriptive interpretation. These results suggest that students are
knowledgeable and capable of handling crises or disasters. Their expertise,
abilities, and involvement can help build more resilient and disaster-prepared
communities. Also, the results imply that students demonstrate a strong
understanding of potential hazards, emergency procedures, and safety
protocols.
Keywords: Criminology, disaster, disaster risk management, Philippines,
students
Utilizing peanut shells in manufacturing particle board
No full textIn Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Civil EngineeringParticle board is commonly used in construction industries that can be applied internally or externally based on its durability. It is made from wood chips or scraps combined with adhesives. This study focuses on using peanut shells, instead of wood, as an alternative material in manufacturing particle boards. This aims to utilize peanut shells in making particle boards and to determine the physical and mechanical properties of peanut shell particle boards. The researchers performed a comparison between two treatments, T1 and T2 that differ in their ratio and proportion of peanut shell and adhesive content. This research anchors with the Philippine National Standards (PNS) in determining the physical and mechanical properties of peanut shell particle board, and the American Society for Testing and Materials (ASTM D-1037, ASTM E-162 and ASTM D3501) on Density Test, Water Absorption or Thickness Swelling Test, Flammability or Fire test, and Strength Test. It is found that T2 has an outstanding result than T1 which has a lesser percentage of Water Absorption, 0% of Thickness Swelling. Therefore, the particle board made from peanut shells has potential workability in application to modern construction
Experimental study on sodium bicarbonate treated coir geotextile for enhancing subgrade stabilization
No full textUndergraduate thesesSurface rutting and cracking have been a continuing problem on roads to date.
These failures are directly attributed to poor subgrade soil quality. Hence, the potential of
coir geotextile as reinforcement has been studied. Several chemical treatments were
introduced on coir geotextile to improve its tensile strength further. The significant increase
in the tensile strength of coir geotextile when treated with sodium bicarbonate (NaHCO3)
was determined in this study. Relatively, the increase in California Bearing Ratio (CBR)
on subgrade reinforced with sodium bicarbonate (NaHCO3) treated coir geotextile was
determined in this study. Grab tensile strength was employed to determine the tensile
strength of the untreated and treated coir geotextile having surface densities of 700g/m2
and 900 g/m2 with varying concentrations of 8wt.%, 12wt.%, and 16wt.% under 24 hours
and 120 hours soaking time. The California Bearing Ratio was evaluated for the
unreinforced and reinforced subgrade samples using the coir geotextile of prevailing tensile
strength. It has been found that TW2-16B obtained the maximum tensile strength, which is
one of the reinforcement strength factors having a surface density of 900 g/m2, 16 wt.%
concentration of NaHCO3 soaked at 120 hours. Furthermore, a significant increase of
393.33% in the CBR value of treated coir geotextile reinforced subgrade was observed
compared to the natural unreinforced soil. The results indicated that chemical treatment of
sodium bicarbonate on coir geotextile significantly improved its tensile strength property
and, hence, could have been a potential reinforcement for enhancing subgrade stabilizatio
Thermal insulating material for ceiling based on the synergy of natural corn husks and sap-containing absorbent pad fibers
No full textIn Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Civil EngineeringInsulating materials or insulators are materials that lessen or stop the flow of heat through them. Corn husks (CH) were recognized as suitable thermal insulators because they showed outstanding potential for thermal characteristics. Absorbent pads contain superabsorbent polymers (SAPs) called Sodium Polyacrylate that can store 600 times their weight in water and, merged with various porous fibers, may have a synergistic effect on improved thermal resistance. This study aims for the corn husk mixed with an absorbent pad, which may be utilized as a thermal insulation medium. The ratios between absorbent pads and corn husk are 30g AP: 30g CH for 1:1, 20g AP: 40g CH for 1:2, and 40g AP: 20g for 2:1. Procedure of thermal conductivity and resistance, burning rate, and tensile strength are based on the Thermal Testing of Building Insulation Materials by Frawley and Kennedy, ASTM-D1929, and ASTM-D3039, respectively. Results from the study show that the 1:2 ratio has the lowest thermal conductivity (0.533 W/mK), highest thermal resistance (0.465 K/W), and lowest burning rate (1.26 in/min) among the three specimens. In contrast, the 1:1 ratio shows the highest tensile strength. The study's findings show that among the three different specimen ratios, the thermal insulating material composed of 20g of the absorbent pad and 40g of corn husk offers the best thermal properties compared to others
Transesterification of waste cooking oil for synthesizing biodiesel by koh supported bio-char catalyst from durian shell (durio zibethinus)
No full textIn Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Chemical EngineeringRenewable and clean energy sources have gained significant attention in recent
times due to the rise in energy demand resulting from the ongoing expansion of industrial activities and the depletion of fossil fuels. Biodiesel, produced via transesterification, represents a promising alternative to petroleum-based fuel thanks to its renewable, environmentally friendly, non-toxic, and cost-effective properties. The main objective of this study is to optimize the synthesis of biodiesel by utilizing a KOH-supported biochar catalyst from durian peel. Waste cooking oil (WCO) underwent pretreatment via acid catalysis using H2SO4, then transesterification was done with the help KOH-impregnated biochar catalyst. The effects on the product yield of the reaction time (RT), catalyst w/w%, and methanol to oil molar ratio (MOR) were observed, and the 27/3 Methanol Test was used to determine the conditions required for 99–100% conversion to biodiesel. In achieving the highest yield possible, parameter optimization was critical. The highest yield obtained was 91.08% at conditions of an RT of 2 hours, 12:1 MOR, 5% w/w catalyst, with the catalyst analyzed showing that it has 24.52% K element